The SitePoint Forums have moved.

You can now find them here.
This forum is now closed to new posts, but you can browse existing content.
You can find out more information about the move and how to open a new account (if necessary) here.
If you get stuck you can get support by emailing forums@sitepoint.com

If this is your first visit, be sure to
check out the FAQ by clicking the
link above. You may have to register
before you can post: click the register link above to proceed. To start viewing messages,
select the forum that you want to visit from the selection below.

That will open the server on port 3001 rather than the default port 3000.

Sorry - not a Mac man so not sure how you'd identify what is running on port 3000

Hello,

yes in the meantime I posted to Usenet the same question and got the suggestion to use another port.
The port 3001 works, but I then saw other errors and I had to fix something about "readline" following a link in the Ruby Talk on Google Groups.

Now it is working, but still I don't understand what's using port 3000 (apparently it's "launchd").

It's Zfone (cryptography for VoIP calls) that uses port 3000 on OSX.
I found this explanation "If you want to use ZRTP today, go download ZFone, itís free (of course). (ps. It installs a launchd-started daemon on TCP port 3000, so if youíre a Rails developeme, you should move your mongrels on different ports until Zfone will offer a configurable listening port )"

Anyway, I'll keep using WEBrick on port 3001, as I need Zfone running.